EP2227436A1 - Siliziumentfernung aus salzsole - Google Patents

Siliziumentfernung aus salzsole

Info

Publication number
EP2227436A1
EP2227436A1 EP08868150A EP08868150A EP2227436A1 EP 2227436 A1 EP2227436 A1 EP 2227436A1 EP 08868150 A EP08868150 A EP 08868150A EP 08868150 A EP08868150 A EP 08868150A EP 2227436 A1 EP2227436 A1 EP 2227436A1
Authority
EP
European Patent Office
Prior art keywords
brine
vessel
dissolving
buffer
iron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08868150A
Other languages
German (de)
English (en)
French (fr)
Inventor
Werner Pohl
Christoph Stegemann
Sami Pelkonen
Thomas Steinmetz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uhde GmbH filed Critical Uhde GmbH
Publication of EP2227436A1 publication Critical patent/EP2227436A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/14—Purification
    • C01D3/16—Purification by precipitation or adsorption
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes

Definitions

  • the discharged filter cake which contains the supplied iron and silicon, is freed of brine in a filter press, wherein the brine is recycled to the process.
  • Thin brine 1 with a salt concentration of 220 kg / m 3 is adjusted to a pH of 2 with hydrochloric acid 2. Subsequently, depending on the silicon concentration in the fresh salt, a few ppm of iron-III chloride 3 are metered into the acidified dilute sols. It is important that the pH is sufficiently low, since iron-III chloride is only stable below a pH of 4. If the delivered thin brine already has a pH below 4, the further acidification could also take place after the iron-III chloride addition.
  • the acidified and provided with ferrous chloride dilute brine is passed into the dissolving vessel 4, in which there is usually always a sediment of unresolved salt.
  • the Dicksole 9 is withdrawn by means of the brine pump 8 and filtered in the filter 10.
  • the filter residue 11 consists predominantly of iron hydroxide and silica. This filter residue 11 can be squeezed out in a filter press (not shown) and the dicksole recovered there can be returned to the buffer tank.
  • the purified Dicksole 12 is largely free of iron and silicon compounds and can, if appropriate, after further treatment steps, for the NaCl electrolysis are used.
  • the thin brine 1 is a supply line to which the additions for hydrochloric acid 2 and iron-III chloride is connected, is provided, which leads into a resting on the bottom of the dissolving container or just above Dünnsoleverteiler 15.
  • the Dünnsoleverteiler 15 consists of closed at the end of the tubes, are embedded in the holes 16.
  • the bores 16 point vertically upwards, but can also be aligned so that they support a circulation flow in the dissolving vessel 4.
  • the dissolving tank 4 has as stirring means an air-jet or brine jet 13 which is connected to a blower or other pressure-increasing device and has a nozzle from which air can escape under the liquid surface at high speed. He also has a Dicksoleabzug 17, which is connected to the brine pump 8, which leads the Dicksole 9 to the filter 10, which deduction for cleaned Dicksole 12 and a Has deduction for filter residue 11. [0023] List of Reference Numerals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Removal Of Specific Substances (AREA)
EP08868150A 2007-12-28 2008-12-23 Siliziumentfernung aus salzsole Withdrawn EP2227436A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007063346A DE102007063346A1 (de) 2007-12-28 2007-12-28 Siliziumentfernung aus Salzsole
PCT/EP2008/011079 WO2009083234A1 (de) 2007-12-28 2008-12-23 Siliziumentfernung aus salzsole

Publications (1)

Publication Number Publication Date
EP2227436A1 true EP2227436A1 (de) 2010-09-15

Family

ID=40637172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08868150A Withdrawn EP2227436A1 (de) 2007-12-28 2008-12-23 Siliziumentfernung aus salzsole

Country Status (9)

Country Link
US (1) US8753519B2 (https=)
EP (1) EP2227436A1 (https=)
JP (1) JP5323090B2 (https=)
CN (1) CN101925535B (https=)
BR (1) BRPI0821812A2 (https=)
CA (1) CA2710667A1 (https=)
DE (1) DE102007063346A1 (https=)
RU (1) RU2476379C2 (https=)
WO (1) WO2009083234A1 (https=)

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RU2495825C1 (ru) * 2012-05-02 2013-10-20 Министерство Образования И Науки Российской Федерации Федеральное Государственное Унитарное Предприятие "Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Химических Реактивов И Особо Чистых Химических Веществ" Способ очистки натрия хлорида
KR101889681B1 (ko) * 2018-02-13 2018-08-17 고려아연 주식회사 오토클레이브 및 오토클레이브의 염 제거방법
CN108862696A (zh) * 2018-06-12 2018-11-23 德蓝水技术股份有限公司 一种用于煤制化工中的高效除硅剂及其制备方法
CN110342548B (zh) * 2019-07-30 2024-01-26 南京纳亿工程技术有限公司 一种离子膜烧碱一次精制盐水除硅铝深度精制的方法
CN110408956B (zh) * 2019-08-08 2021-09-24 青岛沃赛海水淡化科技有限公司 一种氯碱工艺中去除溶液中硅离子的方法
CN113800540B (zh) * 2021-09-30 2023-06-02 浙江镇洋发展股份有限公司 一种离子膜烧碱盐水一次精制除去硅铝的方法

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NO124158B (https=) * 1970-04-16 1972-03-13 Norsk Hydro As
US3846289A (en) * 1972-06-19 1974-11-05 Ecolotrol Waste treatment process
US4034063A (en) * 1974-03-22 1977-07-05 Industrial Resources, Inc. Process for control of SOx emissions from copper smelter operations
JPS5943556B2 (ja) * 1977-04-20 1984-10-23 旭化成株式会社 イオン交換膜を用いた食塩水の電解方法
US4274929A (en) 1980-06-23 1981-06-23 Diamond Shamrock Corporation Chemical removal of silicon from waste brine stream for chlor-alkali cell
US4454044A (en) * 1981-07-13 1984-06-12 Max Klein Water treatment process
SU1098909A1 (ru) * 1982-06-23 1984-06-23 Sverguzova Svetlana V Способ очистки растворов хлорида натри
US5045214A (en) * 1983-03-21 1991-09-03 Union Oil Company Of California Methods for removing substances from aqueous solutions
EP0151120B2 (en) * 1983-03-21 1995-09-06 Union Oil Company Of California Method for removing heavy metals from aqueous solutions by coprecipitation
SU1225813A1 (ru) * 1983-07-21 1986-04-23 Ленинградский Государственный Научно-Исследовательский И Проектный Институт Основной Химической Промышленности Способ очистки раствора хлористого натри
SE461988B (sv) * 1987-10-21 1990-04-23 Eka Nobel Ab Saett vid framstaellning av alkalimetallklorat varvid kiselfoeroreningar avlaegsnas
US4818415A (en) * 1988-03-03 1989-04-04 Kramer Timothy A Method and apparatus for removing liquid from permeable material
CN1021963C (zh) * 1989-12-30 1993-09-01 中南工业大学 氯化钠溶液精制除镁的方法
DE19546135C1 (de) * 1995-12-11 1997-06-19 Bca Bitterfelder Chlor Alkali Verfahren zur Aufbereitung von kieselsäurehaltigen Alkalisalzlösungen, insbesondere für die Chlor-Alkali-Elektrolyse
PT1651567E (pt) * 2003-07-22 2007-11-26 Dct Double Cone Technology Ag Instalação integrada de descontaminação de água e disposição de bombas de poço
JP4706827B2 (ja) * 2005-02-25 2011-06-22 三菱マテリアル株式会社 有機ハロゲン化物含有水の処理方法および処理装置
WO2009006575A1 (en) * 2007-07-03 2009-01-08 Aquatech International Corporation Method for treatment of high ph silica brines

Non-Patent Citations (1)

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Title
See references of WO2009083234A1 *

Also Published As

Publication number Publication date
WO2009083234A1 (de) 2009-07-09
JP5323090B2 (ja) 2013-10-23
WO2009083234A8 (de) 2009-08-27
US8753519B2 (en) 2014-06-17
DE102007063346A1 (de) 2009-07-02
RU2476379C2 (ru) 2013-02-27
BRPI0821812A2 (pt) 2015-06-16
CN101925535A (zh) 2010-12-22
RU2010131611A (ru) 2012-02-10
US20110089117A1 (en) 2011-04-21
CA2710667A1 (en) 2009-07-09
CN101925535B (zh) 2012-11-28
JP2011508717A (ja) 2011-03-17

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Inventor name: STEINMETZ, THOMAS

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Inventor name: POHL, WERNER

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Owner name: THYSSENKRUPP UHDE GMBH

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